Headphone

Abstract

There are provided headphone which can provide a relatively small storage space when being carried around and which can prevent an unexpected breakage of the headphone. A headphone 1 includes a C-shaped headband 2 , a band-plate-like arm part 3 , a sound emission part 4 supported by the arm part 3 , a first attachment portion 7 and a first maintaining body 48 . The first attachment portion 7 rotatably connects the arm part 3 at a central portion of the sound emission part 4 on a side opposite to a sound emitting side of the sound emission part 4 about a first axis P 1 along a width direction of the arm part 3 . The first to maintaining body 48 maintains relative positions of the sound emission part 4 and the arm part 3 around the first axis P 1.

1 . A headphone comprising:
 a headband;   a band-plate-like arm part connected to the headband;   a sound emission part supported by the arm part;   a first attachment portion rotatably connecting the arm part with a central portion of the sound emission part on a side opposite to a sound emitting side of the sound emission part about a first axis along a width direction of the arm part; and   to a first maintaining element maintaining relative positions of the sound emission part and the arm part about the first axis.   
     
     
         2 . The headphone according to  claim 1 , wherein
 the first attachment portion includes a receiving part provided at the arm part and a receiving counter member provided at the sound emission part, wherein   the receiving counter member is received rotatably about the first axis relatively with respect to the receiving part in the receiving part, and the first maintaining element includes an inner face of the receiving part and an end face of the receiving counter member, which are formed so the receiving part engages with the receiving counter member, and a first force-exerting member exerting a force on the end face of the receiving counter member towards the inner face of the receiving part.   
     
     
         3 . The headphone according to  claim 1 , wherein one of the end face of the receiving counter member and the inner face of the receiving part includes a convex portion, and the other one of the end face of the receiving counter member and the inner face of the receiving part includes a concave portion. 
     
     
         4 . The headphone according to  claim 3 , wherein the convex portion and the concave portion are formed to extend linearly. 
     
     
         5 . The headphone according to  claim 4 , wherein the first attachment portion includes: a cutout provided at an end portion of the arm part adjacent to the sound emission part; and a receiving member arranged in the cutout and attached to the sound emission part and receiving the first force-exerting member. 
     
     
         6 . The headphone according to  claim 5 , wherein the receiving member includes: a plate portion formed into a plate-like shape and attached at the sound emission part; and a tube-like tubular portion connecting to the plate portion and receiving the first force-exerting member. 
     
     
         7 . The headphone according to  claim 6 , wherein the arm part is curved in a direction opposite to the sound emitting side of the sound emission part and is curved from an end portion of the arm part adjacent to the headband to an end portion of the arm part adjacent to the sound emission part. 
     
     
         8 . The headphone according to  claim 7 , comprising
 a second attachment portion rotatably connecting the headband and the arm part about a second axis running from the headband toward the arm part.   
     
     
         9 . The headphone according to  claim 8 , comprising
 a third attachment portion rotatably connecting the second attachment portion and the arm part about a third axis substantially parallel to a width direction of the headband and perpendicular to the second axis.   
     
     
         10 . The headphone according to  claim 9 , wherein the second attachment portion includes a force-exerting element exerting a force on the arm part so the arm part is positioned in a neutral position with respect to the headband when the arm part is rotated around the second axis. 
     
     
         11 . The headphone according to  claim 10 , wherein
 the force-exerting element includes an annular elastic deformation portion and a pair of stick-like portions formed into a stick-like shape and extending from the elastic deformation portion in an outer circumferential direction of the elastic deformation portion, wherein   one of the pair of the stick-like portions is attached to the arm part and the other one of the pair of the stick-like portions is attached to the headband.   
     
     
         12 . The headphone according to  claim 11 , comprising a second maintaining element maintaining relative positions of the second attachment portion and the arm part about the third axis. 
     
     
         13 . The headphone according to  claim 9 , comprising a connecting member integrally including a first connecting member and a second connecting member, wherein
 the first connecting member constitutes the second attachment portion and is attached to the headband, and   the second connecting member constitutes the third attachment portion and is attached to the arm part.   
     
     
         14 . The headphone according to  claim 13 , wherein
 the first connecting member is formed into a tubular shape and receives the force-exerting element thereinside, and   the second connecting member is arranged to intersect with the first connecting member and is formed into a tubular shape connecting to the first connecting member, wherein   the second connecting member receives a shaft constituting the third attachment portion.   
     
     
         15 . The headphone according to  claim 14 , wherein
 the second maintaining element includes: a plurality of engagement counter members arranged at an outer circumferential face of the second connecting member and arranged along a circumferential direction at an interval; an engaging member arranged to project and retract from the arm part towards the second connecting member and engages with the engagement counter member; and a second force-exerting member exerting a force on the engaging member towards the second connecting member.   
     
     
         16 . The headphone according to  claim 15 , wherein
 the arm part includes a cutout,   the second connecting member is arranged in the cutout, and   the shaft penetrates through the arm part and the second connecting member.   
     
     
         17 . The headphone according to  claim 2 , comprising,
 a second attachment portion rotatably connecting the headband and the arm part about a second axis running from the headband to the arm part.   
     
     
         18 . The headphone according to  claim 17 , wherein the second attachment portion includes a force-exerting element exerting a force on the arm part so the arm part is positioned in a neutral position with respect to the headband when the arm part is rotated around the second axis. 
     
     
         19 . The headphone according to  claim 18 , comprising
 a third attachment portion rotatably connecting the second attachment portion and the arm part about a third axis substantially parallel to a width direction of the headband and perpendicular to the second axis, and   a connecting member integrally including a first connecting member and a second connecting member, wherein   the first connecting member constitutes the second attachment portion and is attached to the headband, and the second connecting member constitutes the third attachment portion and is attached to the arm part.   
     
     
         20 . The headphone according to  claim 2 , wherein
 the first attachment portion includes a plurality of receiving parts and a plurality of the receiving counter members, wherein   the plurality of receiving parts position the receiving counter members therebetween, and   the first force-exerting member of the first maintaining element is arranged between the plurality of the receiving counter members.